Function partition

Groups the elements into two arrays, depending on the provided function's truthiness for each element

Example

const users = [
  { user: 'barney', age: 36, active: false }, { user: 'fred', age: 40, active: true }
];
partition(users, o => o.active); // [
  [{ 'user': 'fred',    'age': 40, 'active': true }],
  [{ 'user': 'barney',  'age': 36, 'active': false }]
]